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=8x^2 +3x^2 +x-x
=11x^2
B. y^2+4y^2+5y-7y+4
=5y^2 -2y+4
^ itu pangkat.
diteliti lagi yah
=11x2
B. y2+4y2+5y-7y+4 = 5y2- 2y+ 4
maaf klo salah